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This article will introduce how to traverse the List collection from a JSP page.
Example 1:
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<%
List<String> list = new ArrayList<String>();
list.add("简单是可靠的先决条件");
list.add("兴趣是最好的老师");
list.add("知识上的投资总能得到最好的回报");
request.setAttribute("list", list);
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">
<title>Jsp使用c:forEach遍历List集合</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
</head>
<body>
<b>遍历List集合的全部元素：</b>
<br>
<c:forEach items="${requestScope.list}" var="keyword" varStatus="id">
${id.index} ${keyword}<br>
</c:forEach>
<br>
<b>遍历List集合中第一个元素以后的元素（不包括第一个元素）：</b>
<br>
<c:forEach items="${requestScope.list}" var="keyword" varStatus="id" begin="1">
${id.index} ${keyword}<br>
</c:forEach>
</body>
</html>
Example 2:Two-level List traversal
<%
List list = new ArrayList();
List list1 = new ArrayList();
List list2 = new ArrayList();
list1.add("1-a");
list1.add("1-b");
list2.add("2-d");
list2.add("2-c");
list.add(list1);
list.add(list2);
request.setAttribute("list1", list1);
request.setAttribute("list", list);
%>
<c:forEach items="${list }" var="item">
<c:forEach items="${item }" var="item2">
<tr>
<td>${item2 }</td>
</tr>
</c:forEach>The above is the detailed content of jsp traverse list collection. For more information, please follow other related articles on the PHP Chinese website!